作者:William R. Dolbier、Karl S. Medinger、Arthur Greenberg、Joel F. Liebman
DOI:10.1016/0040-4020(82)87020-8
日期:1982.1
I2-catalyzed isomerizations of 3-fluoropropene and 3,3 - difluoropropene, and a Cope rearrangement of 1,1 - difluoro - 1,5 - hexadiene provide thermodynamic data which allow the determination of a number of important group values for contributions to ΔHof which when combined with those determined in the preceding paper allow the calculations of ΔHof's of most simple F-substituted hydrocarbons: [Cd(F)(H)]
I 2催化的3-氟丙烯和3,3-二氟丙烯的异构化以及1,1-二氟-1,5-己二烯的Cope重排提供了热力学数据,这些数据可以确定许多重要的基团值对ΔH的贡献ø ˚F当与那些前述纸中测定合并的允许的ΔH计算ø ˚F “最简单F-取代的烃的S:[C d (F)(H)] = - 38.4,[C d (F )2 ] = − 88.0,[C(F)2(C)(C d)] = − 103.9,[C(F)2(C)2] =-104.9kcal /摩尔。从1,1-二氟转化为3,3-二氟-1,5-己二烯的动力学研究为该工艺提供了活化参数:Log A = 10.8,E a = 33.0 kcal / mole和ΔS ≠ =-12.2 eu讨论并对比了F和其他取代基的渐进式宝石稳定。